餐厨垃圾生物炭对重金属污染修复性能研究  

Study on the Performance of Food Waste Biochar on Remediation of Heavy Metal Pollution

作　　者：刘亮[1] 刘文斌 卿梦霞 贺梓航 刘馨予 尹艳山[1] LIU Liang;LIU Wenbin;QING Mengxia;HE Zihang;LIU Xinyu;YIN Yanshan(School of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410114

出　　处：《工程热物理学报》2025年第3期1017-1025,共9页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.52106131);湖南省教育厅科研项目(No.21A0201)。

摘　　要：由于生物炭的可持续性和低成本,其在水溶液与土壤处理中的适用性受到关注。本文研究不同温度下餐厨垃圾制备生物炭(FWB-350、FWB-450和FWB-550)的物化性质及对水体与土壤中重金属固化性能。其中,FWB-450有较高的pH,最高的含氧官能团密度和比表面积。FWB对溶液Cu^(2+)和Cr^(3+)吸附等温线更接近Freundlich模型,最大吸附容量分别为40.283 mg·g^(−1)和31.310 mg·g^(−1)。在10%添加量下,FWB-450有效降低了土壤重金属不稳定态(酸溶态与可还原态之和)含量,使重金属的流动性与浸出毒性减弱。Due to biochar’s sustainability and low costs,its suitability for use in aqueous solutions and soil treatment has become increasingly concerning.This paper investigates the physical and chemical properties of biochar(FWB-350,FWB-450,and FWB-550)prepared from food waste at different temperatures and its performance in the solidification of heavy metals in aqueous solutions and soil.FWB-450 had a higher pH,the highest density of oxygen-containing functional groups,and the highest specific surface area.The FWB adsorption isotherms for the solution Cu^(2+)and Cr^(3+)were closer to the Freundlich model,with maximum adsorption capacities of 40.283 mg·g^(−1)and 31.310 mg·g^(−1),respectively.The addition of FWB-450 at 10%reduces the number of heavy metals in the unstable state(sum of acid-soluble and reducible states)of the soil,effectively reducing the mobility and leaching toxicity of heavy metals.

关 键 词：餐厨垃圾生物炭 重金属 FREUNDLICH模型 赋存形态 浸出毒性 

分 类 号：X52[环境科学与工程—环境工程] X53